html,
body {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.content {
    position: relative;
    top: 10%;
}

h3 {
    position: relative;
    left: 40%;
    margin-left: 80px;
}

.registered {
    position: relative;
    top: 20%;
    left: 40%;
    width: 240px;
    height: 50px;
}

.registered form {
    text-align: center;
}

.registered input {
    margin-bottom: 10px;
    width: 200px;
    height: 20px;
    border-radius: 5px;
    outline: none;
}

.registered .login {
    display: inline-block;
    position: relative;
    left: -10px;
    width: 60px;
    height: 25px;
    text-decoration: none;
    font-size: 15px;
    color: burlywood;
}

.registered .login:hover {
    color: blue;
}

.registered .btn {
    width: 60px;
    height: 25px;
    font-size: 15px;
    border: 0;
}

.registered .btn:hover {
    cursor: pointer;
    background-color: antiquewhite;
}